400055054 has 16 divisors (see below), whose sum is σ = 715627008. Its totient is φ = 163997592.

The previous prime is 400055053. The next prime is 400055099. The reversal of 400055054 is 450550004.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400055053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620882 + ... + 621525.

It is an arithmetic number, because the mean of its divisors is an integer number (44726688).

Almost surely, 2^400055054 is an apocalyptic number.

400055054 is a deficient number, since it is larger than the sum of its proper divisors (315571954).

400055054 is a wasteful number, since it uses less digits than its factorization.

400055054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242439.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 400055054 is about 20001.3763026448. The cubic root of 400055054 is about 736.8401016224.

The spelling of 400055054 in words is "four hundred million, fifty-five thousand, fifty-four".